5778,9998=PARAM_MT["Vertical Offset by Grid Interpolation", \
  PARAMETER["Vertical offset file", "verticalgrid.tif"],\
  PARAMETER["Interpolation CRS code", 4312]]
5778,9999=PARAM_MT["Vertical Offset by Grid Interpolation", \
  PARAMETER["Vertical offset file", "verticalgrid2.tif"],\
  PARAMETER["Interpolation CRS code", 4312]]
